The [ ] is the set of all possible outcomes in a probability experiment.
The sample space is the set of all possible outcomes in a probability experiment.
Sum the products of the branches for every route leading to that event.
To avoid double-counting the overlap between the two events.
All possible orders (e.g., Red then Blue AND Blue then Red).
Flashcards for Edexcel A Level Maths Probability, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 20 cards drawn from 5.1 Calculating Probabilities, 5.2 Venn Diagrams, 5.3 Mutually Exclusive and Independent Events, and 5.4 Tree Diagrams, matched to the Edexcel A Level Maths (9MA0) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.
